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Try taking in your lazy jacks enough to carry the sail and boom higher than they normally set. That way, all you're lifting is sailcloth and your gaff.
I set up my lazyjacks to slightly hold the boom; then tighten the lazyjacks in that position.
Check for binding at the turning block for your throat halyard, the one near the masthead. If it's reeved the wrong direction it might be developing a bind as the angle of the line changes near full up.
Have followed the halyard all the way up... block is turned correctly. This used to happen with my Potter 15.
You were also in a whole bunch of wind. In thirty mph wind I would be motoring if possible. If not, I would consider a downwind run on a bare pole to a safe place. I remember having our Horizon Cat out in 26 once, and I think downwind I could make three knots, just on windage. Wind loading on the track slugs will make the sail harder to set.
As suggested by Dick Herman, I had the motor in low Forward gear to hold my position... with those winds though, I couldn't keep the boat facing the wind.
Also, how is the boom balanced on the lazy jacks? If your lazy jacks are taking the weight of the boom, do they lift the boom mostly from the back or the front end of the boom?
Lazyjacks -- front & back -- hold the boom parallel... am very careful about that.
On my boats, the lazy jacks lift from far enough forward that the boom has a tendency to see-saw, dropping the back end and sliding the gooseneck up the mast. If your lazy jacks tend to drop the gooseneck, that may be where the extra force is coming from.
This is a good thing to watch for. I don't think the gooseneck has been sliding up -- or jamming -- on the mast. I'll watch for this next time.
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